Shape optimization of streamlined decks of cable-stayed bridges considering aeroelastic and structural constraints

Montoya, Miguel Cid; Hernández, Santiago; Nieto, Francisco Javier Fernández

doi:10.1016/j.jweia.2017.12.018

Cited by 52 publications

(11 citation statements)

References 52 publications

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“…This was included in the authors' previous work Cid Montoya et al, 2018a, where a methodology combining CFD simulations, Design of Experiments (DoE) methods and surrogate models, was developed to generate data that can substitute the information provided by the sectional tests carried out in wind tunnels. This methodology was extended in Cid Montoya et al, 2018b, where a numerical framework was developed for the aerostructural shape optimization of long-span bridges. In this last work, a cable-stayed bridge with a mono-box deck cross section was optimized considering as design variables (DV) the shape and size of the deck and the stay cross-section areas of the cable supporting system, and as design constraints a number of structural constraints and the flutter velocity.…”

Section: © Ascementioning

confidence: 99%

Computational Techniques for Novel Design of Long-Span Bridges Considering Aeroelastic Phenomena

Montoya¹,

Nieto²,

Hernández³

et al. 2020

Structures Congress 2020

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Optimization techniques have demonstrated their capability to obtain economic and sustainable designs while meeting the performance and safety requirements in a number of engineering disciplines. In the bridge engineering field, the increasing main span length of superlong span bridges makes the wind-resistant design a top priority. However, it has been traditionally conducted following heuristic rules based on experimental analyses. Alternatively, the last advances in CFD and metamodeling techniques enables the development of optimization frameworks. The right conception of the aerostructural optimization problem is crucial to achieve noticeable reductions in the required amount of material and comprehensive safe designs. This paper reports the last advances in the authors' line of research that pursues the definition of a numerical methodology for the full aerostructural optimization of long-span bridges considering shape and size design variables. The capabilities of the method are presented, and the necessity of considering uncertainty in the process is discussed.

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Section: © Ascementioning

confidence: 99%

Computational Techniques for Novel Design of Long-Span Bridges Considering Aeroelastic Phenomena

Montoya¹,

Nieto²,

Hernández³

et al. 2020

Structures Congress 2020

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“…Initial research in the application of optimization methods to aeroelastic design of bridge started some years ago (Jurado et al 2011), and the aerostructural shape optimization problem considering the flutter velocity as design constraint has been recently addressed (Cid Montoya et al 2018aMontoya et al , 2018b. A flowchart describing graphically the current state of the methodology is presented in Figure 11 (Cid Montoya et al 2019a).…”

Section: © Ascementioning

confidence: 99%

Aerostructural Optimization of Long Span Bridges: Current Advances and Challenges

Hernández¹,

Nieto²,

Montoya³

et al. 2020

Structures Congress 2020

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This paper describes the evolution of deck shape of long span bridges since the Tacoma Narrows collapse trying to avoid undesirable aerodynamic behavior under wind flow and the trend in the last decades to increase the length of the main span of suspension and cable stayed bridges. The necessity to use advanced technologies to help the engineer to obtain the best possible design is highlighted and the advantages of applying optimization methodologies is encouraged. It is explained that this approach requires to use only numerical tools and hence to eliminate experimental studies, as wind tunnel tests using reduced models of full bridge of a segment of the deck, and their substitution by computational fluid dynamics (CFD) simulations. After doing so, the current capabilities of this approach are presented and, finally, the problems that need to be solved to have a fully operational methodology able to be implemented in real structures are outlined.

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“…Kusano et al [23,24], Ibuki [25] utilized different reliability based design optimization methods for long-span bridges with a probabilistic flutter constraint to minimize the bridge girder weight. Some parametric studies have been made using CFD simulations and response surfaces [26,27] and were later used to optimize the deck cross section of bridges considering flutter [28]. However, these studies only consider quasi-steady formulation for determining aerodynamic derivatives.…”

Section: Introductionmentioning

confidence: 99%

Framework for a simulation-based aerodynamic shape optimization of bridge decks for different limit state phenomena

Abbas¹,

Kavrakov²,

Morgenthal³

et al. 2022

Preprint

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Wind-induced response governs the design of the long-span bridges. The shape of the deck is one of the most important factors that not only affects the mechanical properties but greatly influences the aerodynamic performance of the bridge. An efficient framework is proposed to perform aerodynamic shape optimization of a bridge deck using Computational Fluid Dynamics (CFD) simulations and response surface strategies considering aeroelastic phenomena such as flutter, buffeting and Vortex-induced Vibrations (VIV). A parameterized cross section of the deck has been utilized ensuring required carriageway width and structural demand. The Particle swarm optimization algorithm has been employed which leads to an optimized shape that performs better as compared to the reference section. The presented aerodynamic shape optimization framework has a great potential to be used in the design of long-span bridges.

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Shape optimization of streamlined decks of cable-stayed bridges considering aeroelastic and structural constraints

Cited by 52 publications

References 52 publications

Computational Techniques for Novel Design of Long-Span Bridges Considering Aeroelastic Phenomena

Computational Techniques for Novel Design of Long-Span Bridges Considering Aeroelastic Phenomena

Aerostructural Optimization of Long Span Bridges: Current Advances and Challenges

Framework for a simulation-based aerodynamic shape optimization of bridge decks for different limit state phenomena

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